Answer:
57.4 g/mol
Explanation:
Step 1: Convert 450 cm³ to L
We will use the conversion factors 1 cm³ = 1 mL and 1000 mL = 1 L.
450 cm³ × 1 mL/1 cm³ × 1 L/1 mL = 0.450 L
Step 2: Convert 23 °C to Kelvin
We will use the following expression.
K = °C + 273.15 = 23 + 273.15 = 296 K
Step 3: Calculate the number of moles of the gas
We will use the ideal gas equation.
P × V = n × R × T
n = P × V / R × T
n = 700 mmHg × 0.450 L / (62.4 mmHg.L/mol.K) × 296 K = 0.0171 mol
Step 4: Calculate the molar mass of the gas
0.982 g of the gas correspond to 0.0171 moles.
M = 0.982 g/0.0171 mol = 57.4 g/mol
They are atoms. a molecule is made up of atoms.
Properties: melting point of -100.98°C
boiling point of 34.6°C
density of 3.214 g/l
gravity of 1.56 (-33.6°C)
valence of 1, 3, 5, or 7
Answer:To make the assembly requested, on the basis of the stand, the bunsen burner will be located.
On the stand rod, the iron ring will be placed and on it the wire gauze and the glass of water.
At a higher height of the stand rod, a clamp will be attached to support the test tube.
Explanation:
A support is a piece that consists of a base with a vertical rod on which different accessories are attached that generally must go to a high height.
A bunsen burner is an instrument for heating or combustion of any sample.
Clamps are instruments that attach to the support rod to hold other laboratory materials.
The beaker is a glass material that will contain the water of the experiment.
The assembly will be like the one in the image. Just imagine that there is a test tube in the top clamp and that there is water in the glass :)
Answer:
HOMO of 1,3-butadiene and LUMO of ethylene
HOMO of ethylene LUMO of 1,3-butadiene
Explanation:
1,3 - butadiene underogoes cycloaddition reaction with ethylene to give cyclohexene.
According to Frontier molecular orbital theory HOMO of 1,3 butadiene and LUMO of ethylene and HOMO of ethylene and LUMO of ethylene underoges (4 + 2) in thermal or photochemical condition.